[SOLVED] Crash when creating a new server - FreeNAS jail

mapleleaf87 · January 27, 2017, 3:24am

Up until a few days ago I had a nice stable MineOS server running in a jail on FreeNAS 9.10, in a jail but not the plugin. 1 world, no mods, very simple stuff. I’ve been using the guide written here (https://forums.freenas.org/index.php?threads/how-to-install-mineos-node-in-a-jail-alternative-to-using-the-mineos-plugin.44686/)

Couple of days ago, couldn’t log in to the server, and I couldn’t raise the WebUI for MineOS either. My server data was backed up elsewhere, so I decided to blow up the jail and start from scratch rather then troubleshoot. I’ve started 3 jails from scratch, followed the guides to the letter, and I encounter this same problem each time. When I fill out the information to create a new Minecraft server, the Dashboard will load for a few seconds and then time out. The server logs show it is crashing at this point.

The git commit reports as 4bb4eb3

gist.github.com

https://gist.github.com/anonymous/5bca222f6013508e72d6d7923772f22e

gistfile1.txt

{"level":"info","message":"[WEBUI] mc connected from 192.168.1.144","timestamp":"2017-01-27T03:01:18.502Z"}
{"level":"info","message":"[WEBUI] Downloading official profiles.","timestamp":"2017-01-27T03:01:18.589Z"}
{"level":"info","message":"[WEBUI] mc connected from 192.168.1.144","timestamp":"2017-01-27T03:04:43.637Z"}
{"command":"create","server_name":"test","properties":{"generate-structures":true,"difficulty":"1","gamemode":"0"},"level":"info","message":"[WEBUI] Received emit command from 192.168.1.144:mc","timestamp":"2017-01-27T03:05:26.660Z"}
{"date":"Thu Jan 26 2017 22:05:26 GMT-0500 (EST)","process":{"pid":85737,"uid":0,"gid":0,"cwd":"/usr/local/games/minecraft","execPath":"/usr/local/bin/node","version":"v7.4.0","argv":["/usr/local/bin/node","/usr/local/games/minecraft/webui.js"],"memoryUsage":{"rss":67710976,"heapTotal":26193920,"heapUsed":20222264,"external":303631}},"os":{"loadavg":[0.447265625,0.66015625,0.662109375],"uptime":126706},"trace":[{"column":18,"file":"fs.js","function":"Object.fs.readdirSync","line":871,"method":"fs.readdirSync","native":false},{"column":17,"file":"/usr/local/games/minecraft/mineos.js","function":"Object.mineos.server_pids_up","line":54,"method":"mineos.server_pids_up","native":false},{"column":27,"file":"/usr/local/games/minecraft/mineos.js","function":"mineos.mc.self.property","line":1245,"method":"mc.self.property","native":false},{"column":10,"file":"/usr/local/games/minecraft/mineos.js","function":"self.verify","line":1503,"method":"verify","native":false},{"column":23,"file":"/usr/local/games/minecraft/node_modules/async/lib/async.js","function":null,"line":760,"method":null,"native":false},{"column":37,"file":"/usr/local/games/minecraft/node_modules/async/lib/async.js","function":null,"line":166,"method":null,"native":false},{"column":13,"file":"/usr/local/games/minecraft/node_modules/async/lib/async.js","function":null,"line":718,"method":null,"native":false},{"column":13,"file":"/usr/local/games/minecraft/node_modules/async/lib/async.js","function":"iterate","line":262,"method":null,"native":false},{"column":29,"file":"/usr/local/games/minecraft/node_modules/async/lib/async.js","function":null,"line":274,"method":null,"native":false},{"column":16,"file":"/usr/local/games/minecraft/node_modules/async/lib/async.js","function":null,"line":44,"method":null,"native":false}],"stack":["TypeError: path must be a string or Buffer","    at Object.fs.readdirSync (fs.js:871:18)","    at Object.mineos.server_pids_up (/usr/local/games/minecraft/mineos.js:54:17)","    at mineos.mc.self.property (/usr/local/games/minecraft/mineos.js:1245:27)","    at self.verify (/usr/local/games/minecraft/mineos.js:1503:10)","    at /usr/local/games/minecraft/node_modules/async/lib/async.js:760:23","    at /usr/local/games/minecraft/node_modules/async/lib/async.js:166:37","    at /usr/local/games/minecraft/node_modules/async/lib/async.js:718:13","    at iterate (/usr/local/games/minecraft/node_modules/async/lib/async.js:262:13)","    at /usr/local/games/minecraft/node_modules/async/lib/async.js:274:29","    at /usr/local/games/minecraft/node_modules/async/lib/async.js:44:16"],"level":"error","message":"uncaughtException: path must be a string or Buffer","timestamp":"2017-01-27T03:05:26.666Z"}
{"level":"info","message":"Starting up server, using commit: 4bb4eb3 added fallback for unzip signature error\n","timestamp":"2017-01-27T03:05:31.004Z"}
{"level":"info","message":"[WEBUI] mc connected from 192.168.1.144","timestamp":"2017-01-27T03:08:14.665Z"}

hexparrot · January 27, 2017, 3:36pm

[{“column”:18,“file”:“fs.js”,“function”:“Object.fs.readdirSync”,“line”:871,“method”:“fs.readdirSync”,“native”:false},{“column”:17,“file”:“/usr/local/games/minecraft/mineos.js”,“function”:“Object.mineos.server_pids_up”,“line”:54,“method”:“mineos.server_pids_up”,“native”:false}

This error tells me the issue was trying to find the linprocfs filesystem. In Linux, it’s /proc and in BSD (or at least, jailed) it’s /usr/compat/linux/proc. The latter is what it expects to find, but it is unfortunately not finding it. At least where your jails are at now, it seems like the linprocfs steps need to be rechecked or re-done.

Can you verify from within your jail (where MineOS lives) that /usr/compat/linux/proc/uptime exists?

mapleleaf87 · January 28, 2017, 4:20pm

Yep that was it! After googling around some more about that step, I think it was a simple case of not paying attention to a case-sensitive file path when I mount linprocfs from the FreeNAS system. For anyone else doing this in a FreeBSD jail, you do the linprocfs step from the host system, not from within jail.

Thanks for taking a look hexparrot!